code: def setUp(self):
      self.steps_per_quarter = 1
      self.note_sequence = music_testing_lib.parse_test_proto(
          music_pb2.NoteSequence,
          """
          time_signatures: {
            numerator: 4
            denominator: 4
          }
          tempos: {
            qpm: 60
          }
          """,
      )
  
file_path: magenta/magenta/pipelines/chord_pipelines_test.py
imports: from absl.testing import absltest
  from magenta.common import testing_lib
  from magenta.pipelines import chord_pipelines
  from magenta.pipelines import melody_pipelines
  from note_seq import chords_lib
  from note_seq import constants
  from note_seq import sequences_lib
  from note_seq import testing_lib
  from note_seq.protobuf import music_pb2
label_desc: Use image node_id 1 for calling the ChordPipelinesTest obj's underlying member method code with example usage: obj.setUp() without return types